Quote:
Originally Posted by DaFace
A point made by Cosmos in a recent episode is that we're not only dealing with a challenge of space, but also of time. In other words, the math says that there should be a ton of other planets with life on them, but what's to say that life hasn't already come and gone on most of them? If it turns out that there just isn't a way to go faster than the speed of light, it's entirely plausible that we just won't have anyone else close enough and at the right point in time to find anything out there.
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The country road analogy- essentially the chances of coming to a 4 way stop / intersection at the same time when each car has the entire earth to roam and there's only 1 other car you could intersect with. To add a 2nd car (the 2nd closest planet with life) you have to increase the size of the earth / drivable terrain exponentially each time you want to add another "car" you might be able to intersect with at some point given the endless possible # of routes you could take.